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1985年按株行距1.52×4.57米定植的许多苹果品种苗木,用中轴体系在3道铁丝篱架上整形,1988年株产在5.1—70.8公斤之间,当这些树每平方厘米树干横切面积承担11—12个果实以上时,就出现超载和小果。M26砧树较M7砧树开花更早。4年以后,许多M7砧树大量结果需要疏果。我们认为中轴体系可能是有利可图的。当全部品种相当好的适合于中轴体系时,某些品种就会从形成树冠和大枝平展得到好处。
1985 by row spacing of 1.52 × 4.57 meters planted many varieties of apple seedlings with a shaft system in three wire fence plastic surgery in 1988 produced 5.1-70.8 kg between the trunk when these trees per square centimeter transverse When the area takes 11-12 fruits or more, overloading and small fruit appear. M26 Anvil trees bloom earlier than M7 anvil trees. Four years later, many M7 anvil trees require substantial fruit thinning. We think the mid-axis system may be profitable. When all varieties are well suited to the mid-axis system, certain varieties benefit from flattening the canopy and large branches.